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Stainless steel rain cap for eight inch straight stack part 21329

United Pacific Industries

United Pacific Industries Stainless Rain Cap 21329 exterior accessory

SKU CH-QD5X-MV91R

Stainless steel rain cap fits 8-inch straight exhaust stacks to block water entry

  • Protects 8" straight stacks from rain ingress
  • Stainless steel construction resists corrosion and weathering
  • Direct-fit design installs without modifications
  • Model 21329 ensures correct application for your vehicle

Stainless Rain Cap for 8-Inch Straight Stack

The United Pacific Industries 21329 is a stainless steel rain cap designed to fit an 8-inch diameter straight exhaust stack. It prevents rain, snow and debris from entering the vertical exhaust pipe of industrial vehicles and stationary engines. The accessory suits fleet operators and maintenance teams who need reliable weather protection for exposed stacks.

Thermals Noise and Power Draw

As a passive metal fitting the cap generates no heat, draws no electrical power and produces no audible noise during normal operation. It simply redirects airflow and precipitation away from the stack opening without affecting engine back-pressure or requiring any external energy source.

How it compares

Measured against everything we stock in Auto Cabin & Body Accessories, at today’s prices. Recalculated every night.

Price $39.99
Typical for this category: the median of 344 items is $37.99.

Specifications

Product
Product typeOther

Questions about this item

How do I fit the 21329 rain cap onto an 8" straight stack and what step is often missed?

Slide the cap over the 8" straight stack so the base sits flush, then tighten the clamp bolts evenly; the step often missed is checking the stack is perfectly vertical before final torque.

What maintenance will the 21329 stainless rain cap need over time?

Inspect the clamp bolts and hinge pin every few months for corrosion or looseness, clean off soot build-up, and replace the cap if the stainless shows pitting or the hinge seizes.

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